*Adult brain weighs less then 3 lbs
*If you laid out all of the nerves from an adults body end to end they would be about 47 miles long

*The human brain alone has about 100 billion neurons, if they were lined up it would make a 600 mile long line
*There are 3 parts of a brain cerebrum, cerebellem, and the brain stem

*Nerve messages can zip from one nerve cell to another at speeds of 70 miles per hour or faster
*The nervous system can transmit signals at speeds of 100 meters per second

*Nerves make your eyelids blink if something comes close to your eyes
*Physiatrists help rehabilitate patients with nervous system damage